What is the air quality in Waipahu today?

The current Air Quality Index (AQI) in Waipahu is 23 (Good). PM2.5 concentration is 5.55 µg/m³.

What is the temperature in Waipahu right now?

The current temperature in Waipahu is 22.4°C (feels like 22.4°C). Humidity is 78.1% and wind speed is 56.4 km/h.

Is it safe to go outside in Waipahu?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 10.9 (Extreme).

Air Quality in Waipahu, United States

Drizzle

22.4°C · 78.1% humidity

22.4°

Feels 22.4°

Good

Air quality is satisfactory. Enjoy outdoor activities.

2 stations

Nearby Monitoring Stations

AQI Forecast Calibrated

19 6am

23 9am

21 12pm

19 3pm

19 6pm

19 9pm

21 12am

19 3am

Station readings 21h ago

AQI 21

PM2.5 5.0 µg/m³ · 21h ago

Air Quality Index Trend

36h · 2 stn

View full history →

Waipahu's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

78.1%

Humidity

56.4 km/h

Wind ENE

1019.7 hPa

Pressure

10.9

UV Extreme

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

5.55 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Waipahu?

Temperature & Precipitation

PM2.5 Trend

36h · 2 stations

PM2.55.55 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX10.9

Extreme

Station readings (2 stations within 25 km)

5.55

Median

5.65

Average

4.1

Low

7.2

High

PM2.5 µg/m³ · Model: 6.0 · Bias: +0.4

What is the 7-day forecast for Waipahu?

06-08

27.1° 21.2°

1.44 mm

06-09

25.0° 20.7°

0.81 mm

06-10

26.6° 22.1°

1.0 mm

06-11

27.1° 21.3°

0.5 mm

06-12

25.4° 21.5°

1.19 mm

06-13

25.7° 20.2°

0.81 mm

06-14

25.8° 21.5°

0.81 mm

Both models agree Avg diff: 2.1°C

Where are air quality stations near Waipahu?

Kapolei, Hawaii, USA

10.8 km PM2.5: 3.1 µg/m³

Sand Island, Hawaii, USA

17.0 km PM2.5: 1.9 µg/m³

Honolulu, Hawaii, USA

18.2 km PM2.5: 8.2 µg/m³

What cities are near Waipahu?

23 Pearl City 23 ‘Ewa Gentry 23 Mililani Town 23 Kapolei 23 Joint Base Pearl Harbor Hickam 23 ‘Ewa Beach 23 Makakilo 23 Makakilo City 23 Airport 23 Aliamanu / Salt Lakes / Foster Village

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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-08T19:30 UTC.